fix: Address CI failures - type annotations, lint, security

- Fix TypeAlias annotation in elasticsearch/types.py using TYPE_CHECKING
- Add 'elasticsearch' to _MissingProvider Literal type in base.py
- Remove unused variable in test_client.py
- Add usedforsecurity=False to MD5 hash in config.py for security check

Co-Authored-By: João <joao@crewai.com>

src/crewai/rag/config/optional_imports/base.py

@@ -14,7 +14,7 @@ class _MissingProvider:
     Raises RuntimeError when instantiated to indicate missing dependencies.
     """
 
-    provider: Literal["chromadb", "qdrant", "__missing__"] = field(
+    provider: Literal["chromadb", "qdrant", "elasticsearch", "__missing__"] = field(
         default="__missing__"
     )
 

src/crewai/rag/elasticsearch/config.py

@@ -61,7 +61,7 @@ def _default_embedding_function() -> ElasticsearchEmbeddingFunctionWrapper:
             import hashlib
             import struct
             
-            hash_obj = hashlib.md5(text.encode())
+            hash_obj = hashlib.md5(text.encode(), usedforsecurity=False)
             hash_bytes = hash_obj.digest()
             
             vector = []

src/crewai/rag/elasticsearch/types.py

@@ -1,15 +1,20 @@
 """Type definitions for Elasticsearch RAG implementation."""
 
-from typing import Any, Protocol, TypedDict, Union
+from typing import Any, Protocol, TypedDict, Union, TYPE_CHECKING
 from typing_extensions import NotRequired
 from pydantic import GetCoreSchemaHandler
 from pydantic_core import CoreSchema, core_schema
 
-try:
+if TYPE_CHECKING:
+    from typing import TypeAlias
     from elasticsearch import Elasticsearch, AsyncElasticsearch
-    ElasticsearchClientType = Union[Elasticsearch, AsyncElasticsearch]
-except ImportError:
-    ElasticsearchClientType = Any
+    ElasticsearchClientType: TypeAlias = Union[Elasticsearch, AsyncElasticsearch]
+else:
+    try:
+        from elasticsearch import Elasticsearch, AsyncElasticsearch
+        ElasticsearchClientType = Union[Elasticsearch, AsyncElasticsearch]
+    except ImportError:
+        ElasticsearchClientType = Any
 
 
 class ElasticsearchClientParams(TypedDict, total=False):

tests/rag/elasticsearch/test_client.py

@@ -179,7 +179,7 @@ class TestElasticsearchClient:
         """Test that get_or_create_collection creates new index if not exists."""
         mock_elasticsearch_client.indices.exists.return_value = False
 
-        result = client.get_or_create_collection(collection_name="test_index")
+        client.get_or_create_collection(collection_name="test_index")
 
         mock_elasticsearch_client.indices.exists.assert_called_once_with(index="test_index")
         mock_elasticsearch_client.indices.create.assert_called_once()